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Overview. Theodore Roosevelt served as president from 1901-1909, ascending to the office after the assassination of William McKinley.
With the assassination of President McKinley, Theodore Roosevelt, age 42, became the youngest president in the nation’s history. He brought new excitement and power to the presidency, as he briskly led Congress and the American public toward progressive reforms and an aggressive foreign policy.
Theodore Roosevelt Jr. (October 27, 1858 – January 6, 1919), often referred to as Teddy or by his initials, T. R., was an American politician, statesman, conservationist, naturalist, and writer who served as the 26th president of the United States from 1901 to 1909.
